Cut my finger and now have weird sensations.?

I sliced my left index finger with a knife about a month ago. It didn't bleed much, but it was pretty deep. I kept a bandage on it for about a week and a half, then alternated between airing it out and keeping it covered. It wasn't infected because I often used hydrogen peroxide.

Fast forward a month: I have a bump on the tp of my finger, outlined by the scar of the cut. The bump is not panful, but uncomfortable. I have gotten used to not using that finger for a month.

Anyways, if I touch anything (my face, or other skin) with my index finger, it feels like a million little bumps are on my face/skin... Is it possible that I cut a nerve and now I am feeling f**ked up nerves? Or do I have a bunch of little blisters under the skin?

Thanks and sorry for the long details!
 
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